X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-wy0-f180.google.com ([74.125.82.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4667091 for flyrotary@lancaironline.net; Fri, 07 Jan 2011 09:28:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=74.125.82.180; envelope-from=rwstracy@gmail.com Received: by wyb28 with SMTP id 28so17351243wyb.25 for ; Fri, 07 Jan 2011 06:28:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=Z6Nv5607RKBGstg3u+FzbJrBL3j1OA9Pz0ywMTuKkuo=; b=mpGcHMWc6VfkMJ+rGtyxYiuwcnHZrBxlznpArjyNosMp5iXtsCXGhYddDRPwzNg1MO VPxgn4jJCU7RNx3NXj+xqsK3N1lHPlh/Dg8zmyHSjelaUj9ttQIuct889IjzKNHuqi/o Y5OflweoU7yrQBz7ezPRHbNqoCC1s25DCMsfg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=NFM79Z9EDfYkaMfOALPGgBN3/Ml4+6P9jgCa6kXLMU0wScbb8YUmXTsvsPIkvZ+81+ 9d0iTspCNVclMmHKnOdmEjVTlEFITPEyAHCkc5R+xlWMhEPWJBbDNdiLucSJdypBzoVs 2DrnlvCmM/NFNVqO+FATk0sMOPY4S9/iBOxGA= MIME-Version: 1.0 Received: by 10.216.61.202 with SMTP id w52mr1437453wec.110.1294410490047; Fri, 07 Jan 2011 06:28:10 -0800 (PST) Sender: rwstracy@gmail.com Received: by 10.216.200.158 with HTTP; Fri, 7 Jan 2011 06:28:10 -0800 (PST) In-Reply-To: References: Date: Fri, 7 Jan 2011 09:28:10 -0500 X-Google-Sender-Auth: Oo4si28oF4NWyJB8md50Ozm-sWI Message-ID: Subject: Re: [FlyRotary] Re: NOTICE !!!! Engine run-on with fuel pumps off! From: Tracy To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=000e0ce0037a73ed290499426dde --000e0ce0037a73ed290499426dde Content-Type: text/plain; charset=ISO-8859-1 A lot of rubber hose in the fuel system will store a bit of pressure after pumps off. Doesn't take much (or any) pressure depending on how rich you are running at idle. Remember, at idle the engine is sucking pretty hard on the injector. Tracy On Fri, Jan 7, 2011 at 9:09 AM, David Leonard wrote: > Isn't your tank vented? Shouldn't be able to pressurize it. Maybe you > pressurized the fuel line with some air? > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > On Thu, Jan 6, 2011 at 7:32 PM, wrote: > >> Long story short, standard eng. shut-down, main fuel pump switch to >> OFF, half second or less, eng. quits rather quickly. """UNLESS""" you >> are low on fuel,,, & picked up some air in the lines,,, eng. remained >> running,,, after shaking the thoughts of gremlins out of my head, possible >> as long as 20-30 seconds & quick look at fuel gauge for tank I was on the >> thought came to me that I picked up air from empty tank & pressurized it >> with fuel pump, I now have an air pressure-fuel pump backup sys. so eng. >> will remain running, had to shut down elect. to stop eng. How about that >> one to start the year. David R. Cook RV6A Rotary. >> > > > > --000e0ce0037a73ed290499426dde Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable A lot of rubber hose in the fuel system will store a bit of pressure after = pumps off. =A0 Doesn't take much (or any) pressure depending on how ric= h you are running at idle.=A0 Remember, at idle the engine is sucking prett= y hard on the injector.=A0=A0

Tracy

On Fri, Jan 7, 2011 at 9:09 AM,= David Leonard <wdleonard@gmail.com> wrote:
Isn't your tank vented?=A0 Shouldn't be able to pressurize it.=A0 M= aybe you pressurized the fuel line with some air?

--
David Leona= rd

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.n= et

On Thu, Jan 6, 2011 at 7:32 PM, <= span dir=3D"ltr"><hoursaway1@comcast.net> wrote:

Long stor= y short,=A0 standard eng. shut-down,=A0 main fuel pump switch to OFF,=A0 ha= lf second or less, =A0eng. quits rather quickly.=A0=A0=A0 """= ;UNLESS"""=A0=A0 you are low on fuel,,, & picked up some= air in the lines,,,=A0 eng. remained running,,,=A0 after shaking the thoug= hts of gremlins out of my head,=A0 possible as long as 20-30 seconds & = quick look at fuel gauge for tank I was on the thought came to me that I pi= cked up air from empty tank & pressurized it with fuel pump, I now have= an air pressure-fuel pump backup sys. so eng. will remain running, had to = shut down elect. to stop eng.=A0 How about that one to start the year.=A0= =A0 David R. Cook=A0 RV6A Rotary.





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